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Interactive Retro-Deformation of Terrain for Reconstructing 3D Fault Displacements

Westerteiger, Rolf and Compton, Tracy and Bernadin, Tony and Cowgill, Eric and Gwinner, Klaus and Hamann, Bernd and Gerndt, Andreas and Hagen, Hans (2012) Interactive Retro-Deformation of Terrain for Reconstructing 3D Fault Displacements. IEEE Visualization 2012, Seatlle, USA.

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Planetary topography is the result of complex interactions between geological processes, of which faulting is a prominent component. Surface-rupturing earthquakes cut and move landforms which develop across active faults, producing characteristic surface displacements across the fault. Geometric models of faults and their associated surface displacements are commonly applied to reconstruct these offsets to enable interpretation of the observed topography. However, current 2D techniques are limited in their capability to convey both the three-dimensional kinematics of faulting and the incremental sequence of events required by a given reconstruction. Here we present a real-time system for interactive retro-deformation of faulted topography to enable reconstruction of fault displacement within a high-resolution (sub 1m/pixel) 3D terrain visualization. We employ geometry shaders on the GPU to intersect the surface mesh with fault-segments interactively specified by the user and transform the resulting surface blocks in realtime according to a kinematic model of fault motion. Our method facilitates a human-in-the-loop approach to reconstruction of fault displacements by providing instant visual feedback while exploring the parameter space. Thus, scientists can evaluate the validity of traditional point-to-point reconstructions by visually examining a smooth interpolation of the displacement in 3D. We show the efficacy of our approach by using it to reconstruct segments of the San Andreas fault, California as well as a graben structure in the Noctis Labyrinthus region on Mars.

Item URL in elib:https://elib.dlr.de/80409/
Document Type:Conference or Workshop Item (Paper)
Title:Interactive Retro-Deformation of Terrain for Reconstructing 3D Fault Displacements
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Westerteiger, Rolfrolf.westerteiger (at) dlr.deUNSPECIFIED
Compton, Tracytracycompton (at) gmail.comUNSPECIFIED
Bernadin, Tonytbernardin (at) ucdavis.eduUNSPECIFIED
Cowgill, Ericescowgill (at) ucdavis.eduUNSPECIFIED
Gwinner, Klausklaus.gwinner (at) dlr.deUNSPECIFIED
Hamann, Berndhamann (at) cs.ucdavis.eduUNSPECIFIED
Gerndt, Andreasandreas.gerndt (at) dlr.deUNSPECIFIED
Hagen, Hanshagen (at) informatik.uni-kl.deUNSPECIFIED
Date:December 2012
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:terrain rendering geological faults retro-deformation san andreas fault
Event Title:IEEE Visualization 2012
Event Location:Seatlle, USA
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Berlin-Adlershof , Braunschweig
Institutes and Institutions:Institute of Planetary Research
Institut of Simulation and Software Technology > Software for Space Systems and Interactive Visualisation
Deposited By: Westerteiger, Rolf
Deposited On:08 Jan 2013 14:01
Last Modified:08 Jan 2013 14:01

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